Key-actuated latch for casement windows



Sept. 23, 1969 3,468,142

A. SPRUNG KEY-ACTUATED LATCH FOR CASEMENT WINDOWS Filed Dec. 6, 1967 mw TOR.

United States Patent Ofice 3,468,142 Patented Sept. 23, 1969 3,468,142 KEY-ACTUATED LATCH FOR CASEMENT WINDOWS Abraham Sprung, 2200 Central Road, Fort Lee, NJ. 07024 Filed Dec. 6, 1967, Ser. No. 688,597 Int. Cl. Ec 1/10, 19/12 US. CI. 7089 3 Claims ABSTRACT OF THE DISCLOSURE A casement window latch with a key-operated lock preventing the operation of the handle of the latch. The lock is an integral part of the mounting of the latch and the bolt of the lock extends in the locked position across the upper part of the handle.

This invention relates generally to improvements of key-actuated standard latches for casement windows in which the bracket member of the latch is adapted to include a member of the locking means. More specifically, this invention concerns itself with improvements over applicants Patent #3,270,536 granted Sept. 6, 1966 which combines the operating handle member and the bracket member of the latch into one unit with the locking means. This unified key-actuated latching device can be used to replace the standard latching means without drilling additional holes in the frame of the jamb usually required for locking attachments.

This invention, as disclosed herein, will also provide for the locking member of the latch to removably engage one end of a chain to the jamb with the other end fixed to the window frame, as shown in applicants Patent #3270536. In this manner this invention can be used either to lock the window directly to the jamb or indirectly wherein it will allow for a small space between the window and the jamb to be used for ventilation through the partially opened window and still be in a locked position. This invention primarily will deter an unauthorized person from unlocking the latch, thus gaining entrance through the window.

Another object of this invention is to provide a standard casement window latch with an easy accessible keyactuated locking means to prevent the operation of the handle member of the latch.

A still further object of this invention is to provide a latch having one of its members as a locking means and which is inexpensive in construction, easy to install and operate.

Other and more limited objects of the invention will be apparent from the following specifications and the accompanying drawings forming a part thereof wherein:

FIG. 1 is a front elevation of the invention showing the casement window latch wherein a plunger type locking means member is located in an improved position in respect to the bracket member.

FIG. 2 shows a side view of FIG. 1 with the latch in an open and locked position.

FIG. 3 is a side view of a modified construction showing a pivoted cam type lock mounted on one ear and holding latch in locked position.

FIG. 4 is a side view of the cam type lock showing latch in unlocked position.

Additional features and adaptations of this invention will be illustrated herein as applicable to a swinging casement window or door required to be held and locked in either a closed or partially closed position with the use of a standard latch comprising an outwardly swinging handle hingedly operating between two ears forming a member of the latch bracket. The handle operates a latching finger which is part of and located on the upper end of the handle and serves to latch and unlatch the window. The two ears which are spaced apart include the hinge of the operating handle which also include two space openings through which the locking element of locking means is adapted to be inserted. This locking element comprises a slidable bolt of a standard lock which may be either a plunger type or padlock type. The insertion of this bolt through the opening of the ears will prevent any vertical operation of the handle or latching finger. The unlocking of the locking element or bolt is performed by a key.

The same sliding bolt of the lock can be used for engaging one end of a member formed with a ring and the other end fixedly attached to the window frame. The ring is to be inserted downward between the ears and aligned with the openings of said ears to allow the bolt to slide through.

In the modified construction shown in FIG. 3 and FIG. 4 the locking element comprises a pivoting cam operated by a standard key-actuated cylinder cam lock. This lock is mounted on one ear with the cam portion of the locking element directly above a depressed portion of the upper end of the handle located on the outer surface between the latching finger and the handle itself. By turning the key in the lock in either direction the cam portion be engaged respectively in or disengaged from the said depression in the handle portion of the latch. This will either allow or restrain a vertical pivotal movement of the latching finger portion of the handle.

Referring to the drawing the numeral 10 shows a section of the window jamb and 11 is a section of the casement window sash of the window 12, adapted to contact jamb 10 when window 12 is closed. The window 12 comprises both the sash 11 and glass pane 13. A latching means 14 and locking means 23 are adapted to hold and lock casement window 12 against jamb 10. The latch 14 comprises an operating handle 19 hingedly swinging between two ears of the hinge pin 15. The cars 16a and 16b which are spaced apart at 16c and located perpendicularly to jamb 10 are supported by bracket 17 which is screwed to jamb 10 at 18 and 18'. The operating handle 19 is formed at its upper and inner end with an upwardly curved latching finger 20 and hinged around the hinge pin 15 so that a downward movement of the handle 19 will operate latching finger 20 upward and inward, engaging striker plates 22 of sash 11 on window 12, thereby latching said window to jamb 10. To unlatch window 12 for opening, the latching finger 20 is disengaged from sash 11 by operating handle 19 upward and around hinge pin 15. Latching finger 20 is formed at its upper end and located outside hinge 15 with an outer surface portion 20' at the point where the latching finger meets the upper outside portion of handle 19.

To lock the latch 14 it is necessary to slide a horizontal bolt 26 through the opening 16a and 16b and over the outer surface portion 20 of handle 19. This will prevent the handle 19 from pivoting around hinge pin 15. The bolt 26 can be inserted through openings in the ears by means of a plunger 24 of lock 23 or any standard padlock. The lock 23 which can be a standard sliding door key-operated cylinder lock consisting of a casing or a cylindrical housing 25 and a plunger or cylinder insert 24 is so arranged that it can be pushed inwardly and fixedly held by a standard retaining means of the plunger 24 of lock 23 or the padlock. In order to unlock the latch 14 as shown in FIG. 1 it is necessary to turn key 27 which will release the retaining means thereby allowing the bolt to return in a disengaging position. The lock can be operated through casing 25 attached to either the right ear 16a or to the left ear 16b. It is to be noted that the casing 25 of lock 23 which operates the bolt through 3 the ears and over the outer surface portion 20' can be either a fixed part of latch bracket 17 or a detached lock as in a padlock.

FIG. 2 distinctly shows how the slide bolt 26 will prevent the swinging motion of operating handle 19 and latching finger 20 around the hinge pin 15. FIG. 1 shows how slide bolt 26 engages through both ears 16a and 16b and over surface 20' when latch 14 is in a locked position. v

Bracket 17 including the latch 14 and lock 23 is designed. to conform in all respects to a standard latch bracket including the location of holes for screws 18 and 18'. This .will allow for an easy replacement of the standard latch on standard casement windows with this invention comprising a key-actuated member.

FIG. 3 and FIG. 4'show a'modification of the locking portion of the invention. FIG. 3 distinctly shows the use of a standard cam type key-operated cylinder lock 32 in which thelock element cam 35 of the lock 32 is engaged in thei depr essed portion 33 formed on the upper outer surface of handle 34 at a point where the latching finger 39 meets the upper outer surface portion of said handle 34- and located outside of hinge 36. Lock 32 is mounted on the outside of one ear 31 of the bracket 38 showing the cam 35 engaged with the handle 34 at the depressed portion 33, thereby locking latch 37 in a closed position. To open latch 37 a key is also required to operate lock 32 which will pivot and hold cam 35 in a general horizontal fixed position by a standard retaining means of the cylinder lock 32. This operation will allow enough clearance when cam 35 is disengaged and releasing latching finger 39 'by operating handle 34 around hinge 36, thereby releasing latch 37.

From the foregoing it will be apparent to those skilled in this art that I have provided a very simple and efiicient mechanism for accomplishing the objects of my invention.

It is to be understood that I am not restricted to the specific construction shown and described herein, as various modifications may be made thereto within the spirit of the invention.

What is claimed is:

1. A locking device for a hinged casement window 4 having a sash swinging outwardly and closing against a jamb said sash having a striker plate mounted thereon; said locking device comprising a bracket mounted on the inside of said jamb and having a pair of spaced ears, a latch hingedly mounted on a hinge pin between said ears and having a latching finger extending through said jamb to engage said striker plate and to latch said sash, a handle on said latch carrying said finger swinging inwardly from said jarnb, said handle having an upper curved outer surface portion located opposite said finger and outside said hinge and at least one of said ears being provided with a hole tangentially outside of and located adjacent said surface portion, key-operating locking means on said ear, said locking means having a locking element forming an integral part of said locking means, said element adapted for extending through said hole and over said curved outer surface portion and whereby said handle is prevented from moving for unlocking said window from said jamb.

2. A locking device for a hinged casement window according to claim 1 and having said curved outer surface portion provided with a depressed portion, and a locking element adapted to engage said depressed portion for locking said handle in an inoperative position.

3. A locking device for a hinged casement window according to claim 1, said pair of spaced ears having openings opposed to one another.

References Cited UNITED STATES PATENTS 427,419 5/1890 Hoke 292-104 1,415,104 5/1922 Meyer 292--1D4 X 1,496,551 6/1924 McCulloch 292-404 2,613,525 10/1952 Holmsten 89 3,270,536 9/1966 Sprung 70-89 MARVIN A. CHAMPION, Primary Examiner 'E. J. MCCARTHY, Assistant Examiner U.S. Cl. X.R. 292106 

